191230 pH 298 NTC
用于直接连接模拟pH/ORP电极的监测器，具有2个模拟和继电器输出、Modbus、115V/230V和NTC
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Analog controller for pH/ORP measurement
Analog field monitor for the low and high ohms pH measurement - reliable by means of automatic temperature compensation for NTC, Pt100 or Pt1000:
•Low and high ohm pH input to connect also external sensors
•Reliable measurements by automatic temperature compensation with NTC, Pt100 or Pt1000
•User-friendly operation by intuitive menu structure
The pH 298 is an economical and metrologically flexible solution for use in the field. Consequent galvanic separation of all outputs.
The pH 298 is equipped with a low and a high ohm signal input. Thus, the monitor not only can be operated with WTW SensoLyt® measuring probes/electrodes and WTW ProcessLine® electrodes. If the adapted probes are not equipped with an integrated NTC sensor, you can connect any NTC, Pt100/Pt1000 sensors to measure temperature and for automatic temperature compensation.Model
pH 298
Oxi 298
LF 298
Cl 298
Order No.
191230, 191232, 191234
291230, 291234
391230, 391234
801254
*) Please note: The permitted operating voltage of the sensor can vary considerably
Parameter
pH/ORP
Oxygen
Conductivity
Chlorine, elektrochemical
Measuring Range
-2 … 16 pH
-2000 … +2000 mV0 … 20 mg/l
0 … 200 %0 … 500 mS/cm, different measuring ranges adjustabel
0 … 2 mg/l
Temperature Measurement *)
-10 … 130 °C
NTC or Pt1000
or Pt100-10 … 130 °C
NTC or Pt1000-10 … 130 °C
Pt1000Temperature Compensation
Automatically via temperature measurement in the sensor or via manual input
Relays
2 x switching contacts, change-over, max. 250 VAC / 5 A
Current Outputs
2 x 0(4) … 20 mA
Digital Interface
Modbus / RS485
USB (for configuration, calibration, data recording)
Display
OLED (128 x 64 pixel) with plain text menue
Data Logger
Integrated with real time clock for 4000 datasets, storable via USB, grafical display
Electric Supply
100 … 240 V AC or 18 … 36 V DC
Ambient Conditions
Operational temperature: -10 … 55 °C
Housing Material
Cast Aluminium for wall mounting
Protection Rating
IP 65
Weight
2 kg
Warranty
2 years
